US4809835A - Releaser snap connection for a pulled-type diaphragm spring clutch - Google Patents

Releaser snap connection for a pulled-type diaphragm spring clutch Download PDF

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Publication number
US4809835A
US4809835A US07/098,065 US9806587A US4809835A US 4809835 A US4809835 A US 4809835A US 9806587 A US9806587 A US 9806587A US 4809835 A US4809835 A US 4809835A
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US
United States
Prior art keywords
ring
releaser
ring part
shoulder
radially
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/098,065
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English (en)
Inventor
Erwin Ziegler
Peter Huditz
Werner Fricke
Helmuth Weissenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Sachs AG
Original Assignee
Fichtel and Sachs AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fichtel and Sachs AG filed Critical Fichtel and Sachs AG
Assigned to FICHTEL & SACHS AG, ERNST-SACHS-STRASSE 62, D-8720 SCHWEINFURT; GERMANY reassignment FICHTEL & SACHS AG, ERNST-SACHS-STRASSE 62, D-8720 SCHWEINFURT; GERMANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FRICKE, WERNER, HUDITZ, PETER, WEISSENBERGER, HELMUTH, ZIEGLER, ERWIN
Application granted granted Critical
Publication of US4809835A publication Critical patent/US4809835A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
    • F16D23/143—Arrangements or details for the connection between the release bearing and the diaphragm
    • F16D23/144—With a disengaging thrust-ring distinct from the release bearing, and secured to the diaphragm
    • F16D23/146—Arrangements for the connection between the thrust-ring and the release bearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S192/00—Clutches and power-stop control
    • Y10S192/01—Removable members

Definitions

  • the invention relates to an arrangement for the snap connection of a clutch releaser with spring tongue ends of a diaphragm spring in a diaphragm spring clutch of the pulled construction type.
  • Motor vehicle friction clutches are ordinarily pre-fitted on the engine, while the pertinent clutch releaser is first combined into one unit with the gear.
  • the releaser In the case of pulled-type diaphragm spring clutches, in the assembling of engine and gear the releaser must be connected with the spring tongue ends of the diaphragm spring. This connection normally can be produced only with comparative difficulty, since the clutch and the releaser are covered by a bell of the gear box.
  • the snap connection includes two ring parts, of which a first ring part is secured to the ends of the spring tongues and comprises a radially inwardly protruding first ring stop shoulder directed axially away from the releaser, and a second ring part, which is a component of the releaser, has a radially outwardly protruding second ring stop shoulder directed axially toward the releaser.
  • the second ring part is pushed into the first ring part and snaps into the first ring part with the aid of a radially elastic annular component which spreads out in between the two stop ring shoulders.
  • the expandable ring part is made as a wire ring which is seated in a ring groove of the second ring part allocated to the releaser and in the bringing together of the two ring parts is forced into the groove until it can snap in behind the stop ring shoulder of the first ring part.
  • the first ring part connected with the diaphragm spring, has a comparatively complicated form, since further ring shoulders, by means of which the wire ring can be released from the snap connection in dismantlement, must be provided behind the first ring stop shoulder. Entry tapers are provided on the mutually axially facing sides of the two ring parts, and are intended to facilitate the fitting together of the ring parts.
  • Admittedly fitting together is made more difficult by the fact that the wire ring lies freely movably in the groove of the second ring part and before the uniting of the two ring parts lies with its lower half substantially completely out of the groove, by reason of the dimensions necessary for the snap connection, before it is centered and forced into the groove by the entry ramp of the first ring part.
  • the radially expandable component is made as a sleeve provided with radially resilient tongues.
  • the fitting together of the two ring parts is comparatively difficult by reason of close tolerances, and for the dismantlement an additional wire ring is necessary which surrounds the spring tongues of the sleeve.
  • the wire ring is axially movable in relation to a taper and is capable of pivoting the spring tongues of the sleeve out of engagement.
  • the invention is directed to facilitate the fitting of the releaser on the spring tongue ends of a pulled-type diaphragm spring clutch with low constructional expense. At the same time it is to be ensured that the snap connection used for this purpose is durable, but is easy to disengage in dismantlement.
  • two ring parts provided with ring stop shoulders are provided on the spring tongue ends of the diaphragm spring and on the releaser.
  • the ring parts are radially guided by an additional support ring.
  • the support ring is seated in a first of the two ring parts held on the diaphragm spring and likewise has a ring shoulder against which the wire ring is placed in the insertion of the second ring part provided on the releaser.
  • the support ring is held on the first ring part by retaining tabs which extend radially outside the wire ring and each carry spring tongues which center the wire ring from radially outside.
  • the second ring part therefore can be threaded more easily into the first ring part and especially into the wire ring, in the assembling of engine and gear.
  • the support ring is preferably a one-piece sheet metal shaped part on which the retaining tabs and spring tongues are formed.
  • the wire ring is preferably made as a wire ring which is of circular ring form throughout, but open, the ring ends of which are bent off outwards, so that when the snap connection is closed they are accessible for dismantlement.
  • bent-off ring ends of the wire ring expediently emerge in the region of a retaining tab through an axial aperture of the first ring part.
  • This retaining tab is preferably provided with two spring tongues which hold the wire ring in the region of both ring ends, in order thus to be better able to center the open part of the wire ring.
  • FIG. 1 shows an axial longitudinal section through a thrust plate unit of a pulled-type diaphragm spring clutch and a pertinent releaser, before assembly;
  • FIG. 2 shows an axial elevation of a ring part for securing on the diaphragm spring of the thrust plate unit
  • FIG. 3 shows a sectional view through the ring part, seen along a line III--III in FIG. 2;
  • FIGS. 4 to 6 show detail elevations to explain the assembly procedure
  • FIG. 7 shows an axial elevation of a support ring installed in the ring part of FIG. 2;
  • FIG. 8 shows a partial development of the support ring, seen along a line VIII--VIII in FIG. 7;
  • FIG. 9 shows a detail elevation of the support ring according to FIG. 7;
  • FIG. 10 shows a sectional view of the support ring seen along a line X--X in FIG. 8;
  • FIG. 11 shows a sectional view of the support ring, seen along a line XI--XI in FIG. 7.
  • FIG. 1 shows a thrust plate unit 1 of a pulled-type diaphragm spring friction clutch for a motor vehicle and a releaser 3 in a position before assembly of engine and gear.
  • the thrust plate unit 1 includes a clutch cover 5 for securing in the usual way to the fly-wheel of the engine.
  • the clutch cover 5 encloses a presser plate 7 which is guided non-rotatably but axially displaceably in relation to the clutch cover 5.
  • a diaphragm spring 9 is braced which bears with the external circumference of its annular disc part 11 on the clutch cover 5 and with the internal circumference of its annular disc part 11 on the presser plate 7.
  • Spring tongues 13 separated from one another by slots protrude radially inwards from the internal circumference of the annular disc part 11, on the radially inner, free ends 15 of which tongues a first ring part 17 is secured.
  • the ring part 17, explained in greater detail hereinafter, renders possible a snap connection with a second ring part 19, formed as sleeve, of the releaser 3.
  • the ring part 19 forms a unit with a rotating bearing race ring 21 of a releaser ball bearing 23, the non-rotating bearing race ring 25 of which cooperates with a release fork or the like (not further illustrated) of the release system of the motor vehicle.
  • the ring part 17 comprises a sleeve part 29 bent from sheet metal which passes through the central opening of the diaphragm spring 9 formed by the ends 15 of the spring tongues 13 and has, on the side axially remote from the releaser 3, a ring shoulder 31 resting on the ends 15 of the spring tongues 13.
  • a ring shoulder 31 resting on the ends 15 of the spring tongues 13.
  • the tongues 33 hold a wire ring 35 (FIG. 1) which in turn fixes the ring part 17 axially on the spring tongues 13.
  • a radially elastic wire ring 39 which can support itself on a ring shoulder 41 axially facing the presser plate 7, of the sleeve part 29, is widened out by the entry taper 37 in the insertion of the ring part 19, until it can snap in behind a ring shoulder 43 adjoining the entry taper 37 and facing axially away from the presser plate 7.
  • the wire ring 39 prevents the extraction of the ring part 19 from the ring part 17 and renders possible the transmission of traction forces in the direction of the arrow 27.
  • the wire ring 39 is made as an open wire ring of circular ring form which is uniformly loaded by reason of its uniform configuration and therefore has a comparatively long life.
  • the two ring ends 45 of the wire ring 39 are cranked and on the side remote from the presser plate 7 they protrude from the ring part 17 for the formation of graspable ends.
  • the wire ring 39 can be widened out for dismantlement by pressing apart of the graspable ends 45.
  • the wire ring 39 is supported on a support ring 47 formed as sheet metal shaped part which is secured on the sleeve part 29 with a plurality of formed on retaining tabs.
  • the support ring 47 is guided radially on an annular face 49 which merges on the side of the releaser 3 into a shoulder 51 facing the presser plate 7.
  • the shoulder 51 fixes the support ring 47 towards the releaser 3.
  • the support ring 47 is fixed by three retaining tabs 53, 55, 57 offset by 120° in relation to one another, which grasp through radially between the wire ring 39 and the sleeve part 29 and are bent with bending tabs 59 around the sleeve part 29 on the outside thereof.
  • the retaining tabs 53, 55, 57 extend through apertures 65, 67, 69 through the ring shoulder 41, while the bending tabs 59, 61, 63 in turn extend in axial apertures 71, 73, 75 and abut on the bottoms of these apertures.
  • the aperture 71 is deeper in the axial direction than the apertures 73, 75 and thus forms a radial opening through which the graspable ends 45 of the wire ring 39 can emerge. With its end faces 77 facing one another in the circumferential direction the aperture 71 forms stops which receive the graspable ends 45 of the wire ring 39 between them and thus fix the wire ring 39 non-rotatably.
  • the side of the support ring 47 axially adjacent to the presser plate 7 is provided with a radially inwardly protruding ring flange 79 which axially supports the wire ring 39 in the insertion of the ring part 19.
  • the wire ring 39 has an external diameter which is slightly smaller than the internal diameter of the support ring 47.
  • the radial play of the wire ring 39 in the support ring 47 and thus the ring part 17 would make the threading-in of the ring part 19 considerably more difficult.
  • two spring tongues 81 are formed on the retaining tab 53 and a spring tongue 83 and 85 respectively is formed on each of the retaining tabs 55, 57.
  • the spring tongues 81, 83, 85 hold the wire ring 39 centrally in relation to the sleeve part 29 and thus facilitate the introduction of the entry taper 37 into the wire ring and thus the ring part 17.
  • the two tongues 81 hold the wire ring 39 on both sides of the graspable ends 45 in order here too to keep radial shift as slight as possible.
  • FIGS. 4 to 6 show the ring part 17 in an axial longitudinal section through the region of the retaining tab 53.
  • FIG. 4 there is represented the situation in the introduction of the ring part 19 into the ring part 17 during the uniting of engine and gear.
  • the wire ring 39 lies on the spring tongue 81 and the ring flange 79, so that the entry taper 37 can be threaded without problem in the entry direction indicated by an arrow 88.
  • the wire ring 39 is not radially stressed. Its external diameter in this situation is greater than the minimum diameter of the ring shoulder 41 and greater than the internal diameter of the ring flange 79.
  • FIG. 5 shows the situation in which, by insertion of the ring part 19, the wire ring 39 is widened radially to the maximum and thus initially stressed.
  • the ring shoulder 79 has transmitted to the ring part 17 the axial force generated in widening by the entry taper 37.
  • FIG. 5 shows that the maximum external diameter of the entry taper 37 and the internal diameter of the support ring 47 are so dimensioned that the wire ring 39 just finds room radially between them. If the ring part 19 is pushed further in the direction of the arrow 88, then the initially stressed wire ring 39 snaps in behind the ring shoulder 43 of the ring part 19 and between the ring shoulders 41, 43 blocks the ring part 19 against extraction in the actuation direction 27 of the releaser 3. For dismantlement the wire ring 39 is widened out, by drawing apart of its graspable ends 45, so far that the ring shoulder 43 and the entry ramp 37 can be drawn out of the wire ring 39 again.
  • FIGS. 7 to 11 show details of the support ring 47 as already explained above.
  • the support ring 47 has a circumferential wall 87 intended for abutment on the sleeve part 29, from which wall the ring flange 79 protrudes radially inwards from one axial side.
  • the spring tongues 81 provided for the centering of the two ends of the wire ring 39 are formed, as best shown by FIG. 8, as angle tongues which stand away from one another from circumferentially mutually opposite sides of the retaining tab 53 and are bent off towards the ring flange 79.
  • the roots 89 of the spring tongues 81 here extend with axial spacing from the ring flange 79 and are punched by clear cuts 91 out of the material of the circumferential wall 87 in such a way that the free ends of the spring tongues 81 reach nearly to the ring flange 79.
  • tabs 93 lying radially opposite to the spring tongues are formed on the ring flange 79 and are bent off axially oppositely from the ring flange 79. The tabs 93 stiffen out the support ring 47 in this region.
  • the retaining tabs 55, 57 are of like configuration so that only the configuration of the retaining tab 55 will be explained as example.
  • the spring tongue 83 is arranged in the middle plane of the retaining tab 55 while its root 95 is provided on the side axially remote from the ring flange 79 and merges into a web 97 connecting the zones of the retaining tab 55 in the circumferential direction on both sides of the spring tongue 33.
  • the bending tabs 61 stand away from the web 97 with a spacing from one another in the circumferential direction which is greater than the width of the bending tabs 61.
  • the support ring 47 is stiffened out in the region of the retaining tab 55 by the web 97 and its double fastening by means of the tabs 61 on the sleeve part 29.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
US07/098,065 1986-09-27 1987-09-17 Releaser snap connection for a pulled-type diaphragm spring clutch Expired - Fee Related US4809835A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3632884A DE3632884C2 (de) 1986-09-27 1986-09-27 Gezogene Membranfederkupplung mit Schnappverbindung
DE3632884 1986-09-27

Publications (1)

Publication Number Publication Date
US4809835A true US4809835A (en) 1989-03-07

Family

ID=6310498

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/098,065 Expired - Fee Related US4809835A (en) 1986-09-27 1987-09-17 Releaser snap connection for a pulled-type diaphragm spring clutch

Country Status (4)

Country Link
US (1) US4809835A (fr)
DE (1) DE3632884C2 (fr)
FR (1) FR2604499B1 (fr)
GB (1) GB2200424B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4909370A (en) * 1987-11-27 1990-03-20 Fichtel & Sachs Ag Pulled-type motor vehicle clutch
US5113989A (en) * 1989-10-13 1992-05-19 Valeo Actuating assembly for a clutch release bearing, in particular for an automotive vehicle
US5423405A (en) * 1992-11-27 1995-06-13 Aisin Seiki Kabushiki Kaisha Clutch release bearing device
DE19703250A1 (de) * 1996-07-17 1998-01-29 Exedy Corp Haltekragen für einen Drahtring sowie Ausrückeinheit für einen Kupplungsmechanismus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE505760C2 (sv) * 1992-07-21 1997-10-06 Fichtel & Sachs Ag Snäppförbindningsarrangemang för en urkopplingsanordning

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7325080U (de) * 1973-10-04 Skf Kugellagerfabriken Gmbh Ausrucklager fur Reibungskupplungen
DE3415626A1 (de) * 1983-04-26 1984-10-31 Valeo, Paris Anordnung eines kupplungs-drucklagers, anlegeteil fuer eine solche anordnung und verfahren zum ein- und ausbau der anordnung
FR2588051A1 (fr) * 1985-06-28 1987-04-03 Valeo Montage de butee de debrayage, notamment pour vehicule automobile
US4658945A (en) * 1984-05-07 1987-04-21 Automotive Products Plc Friction clutch release mechanism
US4667800A (en) * 1983-04-11 1987-05-26 Valeo Pulled type clutch release mechanism
US4733764A (en) * 1985-10-09 1988-03-29 Fraymon S.A. Clutch release bearing assembly
US4733762A (en) * 1985-10-09 1988-03-29 Valeo Couplable/decouplable clutch release bearing assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2557235B1 (fr) * 1983-12-27 1986-05-23 Valeo Montage de butee de debrayage
GB8404519D0 (en) * 1984-02-21 1984-03-28 Automotive Prod Plc Friction clutch for vehicle
DE3537788C2 (de) * 1985-10-24 1994-02-10 Fichtel & Sachs Ag Schnappverbindung für eine gezogene Membranfederkupplung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7325080U (de) * 1973-10-04 Skf Kugellagerfabriken Gmbh Ausrucklager fur Reibungskupplungen
US4667800A (en) * 1983-04-11 1987-05-26 Valeo Pulled type clutch release mechanism
DE3415626A1 (de) * 1983-04-26 1984-10-31 Valeo, Paris Anordnung eines kupplungs-drucklagers, anlegeteil fuer eine solche anordnung und verfahren zum ein- und ausbau der anordnung
US4658945A (en) * 1984-05-07 1987-04-21 Automotive Products Plc Friction clutch release mechanism
FR2588051A1 (fr) * 1985-06-28 1987-04-03 Valeo Montage de butee de debrayage, notamment pour vehicule automobile
US4733764A (en) * 1985-10-09 1988-03-29 Fraymon S.A. Clutch release bearing assembly
US4733762A (en) * 1985-10-09 1988-03-29 Valeo Couplable/decouplable clutch release bearing assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4909370A (en) * 1987-11-27 1990-03-20 Fichtel & Sachs Ag Pulled-type motor vehicle clutch
US5113989A (en) * 1989-10-13 1992-05-19 Valeo Actuating assembly for a clutch release bearing, in particular for an automotive vehicle
US5423405A (en) * 1992-11-27 1995-06-13 Aisin Seiki Kabushiki Kaisha Clutch release bearing device
DE19703250A1 (de) * 1996-07-17 1998-01-29 Exedy Corp Haltekragen für einen Drahtring sowie Ausrückeinheit für einen Kupplungsmechanismus
DE19703250C2 (de) * 1996-07-17 1999-07-15 Exedy Corp Haltekragen für einen Drahtring

Also Published As

Publication number Publication date
GB2200424A (en) 1988-08-03
FR2604499A1 (fr) 1988-04-01
FR2604499B1 (fr) 1990-02-09
GB2200424B (en) 1990-07-18
GB8722766D0 (en) 1987-11-04
DE3632884A1 (de) 1988-03-31
DE3632884C2 (de) 1995-04-27

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AS Assignment

Owner name: FICHTEL & SACHS AG, ERNST-SACHS-STRASSE 62, D-8720

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:ZIEGLER, ERWIN;HUDITZ, PETER;FRICKE, WERNER;AND OTHERS;REEL/FRAME:004793/0012

Effective date: 19870907

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Effective date: 19930307

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362